DVD-audio was developed based on the video format (DVD video) while the Super Audio CD was developed based on the
audio format (CD). DVD-audio is based on PCM recording technology of the past but offers improved sound quality by using a
higher sampling frequency and longer word lengths. The SACD, however, is based on a superior recording technology called
Direct Stream Digital (DSD) that more closely reproduces the shape of the original analog waveforms to produce a more natural,
higher quality sound that more accurately captures the nuance and atmosphere of the source material.